package com.xdz.android.learn.geoquiz;

import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ForkJoinTask;

public class QuizActivity extends AppCompatActivity {

    private static final String TAG = "QuizActivity";
    private static final String KEY_INDEX = "index";
    private static final String HAS_ANSWERED_INDEX = "has answered index";

    private Button mTrueButton;
    private Button mFalseButton;
    private Button mNextButton;
    private TextView mQuestionTextView;
    private Question[] mQuestionBank = new Question[]{
            new Question(R.string.question_australia, true),
            new Question(R.string.question_oceans, true),
            new Question(R.string.question_mideast, false),
            new Question(R.string.question_africa, false),
            new Question(R.string.question_americas, true),
            new Question(R.string.question_asia, true)
    };
    private int mCurrentIndex = 0;
    private ArrayList<Integer> hasAnsweredIndex = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d(TAG, "onCreate(Bundle) called");
        setContentView(R.layout.activity_quiz);
        if (savedInstanceState != null) {
            mCurrentIndex = savedInstanceState.getInt(KEY_INDEX, 0);
            hasAnsweredIndex.clear();
            hasAnsweredIndex = savedInstanceState.getIntegerArrayList(HAS_ANSWERED_INDEX);
            for (int i = 0; i < mQuestionBank.length; i++) {
                if (hasAnsweredIndex.contains(i)) {
                    mQuestionBank[i].setAnswered(true);
                }
            }
        } else {
            for (Question q : mQuestionBank) {
                q.setAnswered(false);
            }
        }
        mQuestionTextView = (TextView) findViewById(R.id.question_text_view);
        mQuestionTextView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length;
                updateQuestion();
            }
        });
        int question = mQuestionBank[mCurrentIndex].getTextResId();
        mQuestionTextView.setText(question);

        mTrueButton = (Button) findViewById(R.id.true_button);
        mTrueButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mQuestionBank[mCurrentIndex].setAnswered(true);
                checkAnswer(true);
                updateButtonClickable();
            }
        });
        mFalseButton = (Button) findViewById(R.id.false_button);
        mFalseButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mQuestionBank[mCurrentIndex].setAnswered(true);
                checkAnswer(false);
                updateButtonClickable();
            }
        });
        mNextButton = (Button) findViewById(R.id.next_button);
        mNextButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length;
                updateQuestion();
            }
        });
        updateQuestion();
    }

    @Override
    protected void onStart() {
        super.onStart();
        Log.d(TAG, "onStart() called");
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.d(TAG, "onResume() called");
    }

    @Override
    protected void onPause() {
        super.onPause();
        Log.d(TAG, "onPause() called");
    }

    @Override
    public void onSaveInstanceState(Bundle savedInstanceState) {
        super.onSaveInstanceState(savedInstanceState);
        Log.i(TAG, "onSaveInstanceState, mCurrentIndex = " + mCurrentIndex);
        savedInstanceState.putInt(KEY_INDEX, mCurrentIndex);
        savedInstanceState.putIntegerArrayList(HAS_ANSWERED_INDEX, hasAnsweredIndex);
    }

    @Override
    protected void onStop() {
        super.onStop();
        Log.d(TAG, "onStop() called");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.d(TAG, "onDestroy() called");
    }

    private void updateQuestion() {
        int question = mQuestionBank[mCurrentIndex].getTextResId();
        mQuestionTextView.setText(question);
        updateButtonClickable();
    }

    private void updateButtonClickable() {
        if (mQuestionBank[mCurrentIndex].isAnswered()) {
            mTrueButton.setEnabled(false);
            mFalseButton.setEnabled(false);
            if (!hasAnsweredIndex.contains(mCurrentIndex)) {
                hasAnsweredIndex.add(mCurrentIndex);
            }
        } else {
            mTrueButton.setEnabled(true);
            mFalseButton.setEnabled(true);
        }
    }

    private void checkAnswer(boolean userPressedTrue) {
        boolean answerIsTrue = mQuestionBank[mCurrentIndex].isAnswerTrue();
        int messageResId = 0;
        if (userPressedTrue == answerIsTrue) {
            messageResId = R.string.correct_toast;
        } else {
            messageResId = R.string.incorrect_toast;
        }
        Toast.makeText(this, messageResId, Toast.LENGTH_SHORT)
                .show();
    }

}
